﻿<!DOCTYPE html>

<html>

<head>

    <meta http-equiv="content-type" content="text/html;charset=utf-8">

    <meta name="format-detection" content="telephone=no">

    <meta name="msapplication-tap-highlight" content="no">

    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">

    <title>Html5上传文件</title>

</head>

<body>
    <div class="app">
        <h1>Html5上传文件测试，带进度条</h1>
        <div>
            <input type="file" value="" id="fileInput" name="files" onchange="fileSelected()" />
            <div style="margin:30px;">
                <input type="button" value="上传" onclick="uploadFile()" />

            </div>
            <div style="margin:30px;">
                <div id="fileName"></div>
                <div id="fileSize"></div>
                <div id="fileType"></div>

            </div>
            <div style="margin:30px;width:500px;height:15px;border:1px solid #aeaeae;">
                <div id="progress" style="background:#4cff00;height:15px;width:0%;"></div>
                <div id="percentNumber"></div>

            </div>
            <div style="margin:30px;">
                <div id="msg"></div>

            </div>

        </div>

    </div>

    <script type="text/javascript">

        function fileSelected() {
            //重置状态显示
            document.getElementById("msg").innerHTML = "";
            document.getElementById('percentNumber').innerHTML = '';
            document.getElementById("progress").style.width = "0%";
            var file = document.getElementById('fileInput').files[0];
            if (file) {
                var fileSize = 0;
                if (file.size > 1024 * 1024 * 10)
                    fileSize = (Math.round(file.size * 100 / (1024 * 1024)) / 100).toString() + 'MB';
                else
                    fileSize = (Math.round(file.size * 100 / 1024) / 100).toString() + 'KB';
                document.getElementById('fileName').innerHTML = 'Name: ' + file.name;
                document.getElementById('fileSize').innerHTML = 'Size: ' + fileSize;
                document.getElementById('fileType').innerHTML = 'Type: ' + file.type;
            }
        }


        function uploadFile() {
            var file = document.getElementById('fileInput').files[0];
            if (!file) {
                alert("请选择文件");
                return;
            }
            var fd = new FormData();
            fd.append("fileInput", file);
            var xhr = new XMLHttpRequest();
            xhr.onreadystatechange = function () {
                //alert(xhr.responseText);
                if (xhr.readyState == 4 && xhr.status == 200) {
                    var json = xhr.responseText;
                    //alert(json);
                    var data = eval('(' + json + ')');
                    alert(data.msg);
                }
            }
            xhr.upload.addEventListener("progress", uploadProgress, false);
            xhr.addEventListener("load", uploadComplete, false);
            xhr.addEventListener("error", uploadFailed, false);
            xhr.addEventListener("abort", uploadCanceled, false);
            xhr.open("POST", "/home/upload");//修改为自己服务器接口地址
            //xhr.setRequestHeader("Access-Control-Allow-Origin", "*");//需要在IIS里面配置，就可以跨域请求了
            //xhr.setRequestHeader("Content-Type", "multipart/form-data");
            xhr.send(fd);
        }
        function uploadProgress(evt) {
            if (evt.lengthComputable) {
                var percentComplete = Math.round(evt.loaded * 100 / evt.total);
                document.getElementById('percentNumber').innerHTML = percentComplete + '%';
                var jindutiao = document.getElementById("progress");
                jindutiao.style.width = percentComplete + "%";
            }
            else {
                document.getElementById('percentNumber').innerHTML = '不支持进度计算';
            }
        }
        function uploadComplete(evt) {
            //evt.target.responseText
            document.getElementById("msg").innerHTML = "上传成功";
        }
        function uploadFailed(evt) {
            document.getElementById("msg").innerHTML = "上传过程中有一个错误";
        }
        function uploadCanceled(evt) {
            document.getElementById("msg").innerHTML = "用户取消了上传或者浏览器删除了连接";
        }
    </script>

</body>

</html>
